- ECHO: Exploring and Collecting History Online
Dedicated to using the internet to collect and assemble (for the historical record) personal recollections of recent developments in science and technology, and to encouraging others to undertake similar projects. Includes a directory of history of science and technology websites.
- Ancient Greece: Science and Technology
Discusses early inventions, such as calculating devices, machines using gears, steam engines, war technology, and town planning. Some mathematicians included are Thales, Pythagoras, Euclid, Archimedes, and Appolonius. Some topical concepts covered are astronomical discoveries, prime numbers, evolution of the species, and measuring the circumference of the earth.